feat: 用户对话数据同步到backend + 用户资料修改同步

backend/app.py

@@ -166,6 +166,20 @@ def init_db():
         )
     ''')
     
+    # 对话表（用户对话数据）
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS conversations (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id INTEGER NOT NULL,
+            title TEXT NOT NULL,
+            agent_id TEXT,
+            messages TEXT NOT NULL DEFAULT '[]',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            FOREIGN KEY (user_id) REFERENCES users(id)
+        )
+    ''')
+    
     # 初始化默认大模型配置
     cursor.execute('SELECT COUNT(*) FROM llm_configs')
     if cursor.fetchone()[0] == 0:
@@ -581,6 +595,118 @@ def change_user_password(id):
     return jsonify({'success': True})
 
 
+# ==================== 用户对话数据同步 ====================
+
+@app.route('/api/user/<int:user_id>/conversations', methods=['GET'])
+def get_user_conversations(user_id):
+    """获取用户所有对话"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        SELECT id, title, agent_id, messages, created_at, updated_at 
+        FROM conversations WHERE user_id = ? ORDER BY updated_at DESC
+    ''', (user_id,))
+    
+    conversations = []
+    for row in cursor.fetchall():
+        conv = dict(row)
+        # 解析消息JSON
+        try:
+            conv['messages'] = json.loads(conv['messages']) if conv['messages'] else []
+        except:
+            conv['messages'] = []
+        # 转换为前端格式（使用字符串ID）
+        conv['id'] = str(conv['id'])
+        conv['createdAt'] = int(datetime.strptime(conv['created_at'], '%Y-%m-%d %H:%M:%S').timestamp() * 1000) if conv['created_at'] else 0
+        conv['updatedAt'] = int(datetime.strptime(conv['updated_at'], '%Y-%m-%d %H:%M:%S').timestamp() * 1000) if conv['updated_at'] else 0
+        conv['agentId'] = conv['agent_id']
+        conversations.append(conv)
+    
+    conn.close()
+    return jsonify(conversations)
+
+
+@app.route('/api/user/<int:user_id>/conversations', methods=['POST'])
+def create_user_conversation(user_id):
+    """创建新对话"""
+    data = request.json
+    title = data.get('title', '新对话')
+    agent_id = data.get('agentId') or data.get('agent_id')
+    messages = data.get('messages', [])
+    
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        INSERT INTO conversations (user_id, title, agent_id, messages)
+        VALUES (?, ?, ?, ?)
+    ''', (user_id, title, agent_id, json.dumps(messages)))
+    conn.commit()
+    
+    conv_id = cursor.lastrowid
+    conn.close()
+    
+    return jsonify({'success': True, 'id': str(conv_id)})
+
+
+@app.route('/api/user/<int:user_id>/conversations/<int:conv_id>', methods=['PUT'])
+def update_user_conversation(user_id, conv_id):
+    """更新对话（添加消息、修改标题等）"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    
+    # 验证对话属于该用户
+    cursor.execute('SELECT id FROM conversations WHERE id = ? AND user_id = ?', (conv_id, user_id))
+    if not cursor.fetchone():
+        conn.close()
+        return jsonify({'error': '对话不存在'}), 404
+    
+    # 更新字段
+    updates = []
+    values = []
+    
+    if 'title' in data:
+        updates.append('title = ?')
+        values.append(data['title'])
+    
+    if 'messages' in data:
+        updates.append('messages = ?')
+        values.append(json.dumps(data['messages']))
+    
+    if 'agentId' in data or 'agent_id' in data:
+        updates.append('agent_id = ?')
+        values.append(data.get('agentId') or data.get('agent_id'))
+    
+    if updates:
+        updates.append('updated_at = CURRENT_TIMESTAMP')
+        sql = f'UPDATE conversations SET {", ".join(updates)} WHERE id = ?'
+        values.append(conv_id)
+        cursor.execute(sql, values)
+        conn.commit()
+    
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/user/<int:user_id>/conversations/<int:conv_id>', methods=['DELETE'])
+def delete_user_conversation(user_id, conv_id):
+    """删除对话"""
+    conn = get_db()
+    cursor = conn.cursor()
+    
+    # 验证对话属于该用户
+    cursor.execute('SELECT id FROM conversations WHERE id = ? AND user_id = ?', (conv_id, user_id))
+    if not cursor.fetchone():
+        conn.close()
+        return jsonify({'error': '对话不存在'}), 404
+    
+    cursor.execute('DELETE FROM conversations WHERE id = ?', (conv_id,))
+    conn.commit()
+    conn.close()
+    
+    return jsonify({'success': True})
+
+
 # ==================== 大模型接口管理 ====================
 
 @app.route('/api/admin/llm', methods=['GET'])